Evaluación de la diagénesis en huesos arqueológicos y caracterización de la relación 87Sr/86Sr local en la evaluación de migraciones humanas
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Abstract
Los estudios isotópicos de Sr se utilizan para establecer pautas de migración
humana. La relación 87Sr/86Sr en restos humanos viene determinada
por el entorno geológico donde vivió la persona. Sin embargo, esta composición
isotópica puede modificarse durante el soterramiento. El análisis de
FTIR indica que los huesos estudiados no han sufrido alteración significativa
y preservan la señal biogénica original. La composición isotópica de los sedimentos
es significativamente menos radiogénica (t-test) que la de los restos
óseos humanos (t(16) = -9,069, p < 0,0001). Estas diferencias sugieren
que la modificación isotópica durante el soterramiento ha sido insignificante.
Dientes con relaciones 87Sr/86Sr más radiogénicas indican individuos foráneos
procedentes de dos áreas diferentes
Strontium isotope studies are used to establish patterns of human migration. The 87Sr/86Sr ratio in human remains is determined by the geological environment where indiviuals had lived. However during burial the isotope composition can be modified. FTIR analysis indicates that the bones sudied had not been significantly modified and preserve the original biogenic signature. Isotope composition of sediments is significantly less radiogenic (t-test) than the human bones (t(16) = -9.069, p < 0.0001).These differences suggest that the isotopic modification during burial has been negligible and the biogenic signal is well-preserved. Individuals with more radiogenic 87Sr/86Sr ratio indicate provenance from two different regions
Strontium isotope studies are used to establish patterns of human migration. The 87Sr/86Sr ratio in human remains is determined by the geological environment where indiviuals had lived. However during burial the isotope composition can be modified. FTIR analysis indicates that the bones sudied had not been significantly modified and preserve the original biogenic signature. Isotope composition of sediments is significantly less radiogenic (t-test) than the human bones (t(16) = -9.069, p < 0.0001).These differences suggest that the isotopic modification during burial has been negligible and the biogenic signal is well-preserved. Individuals with more radiogenic 87Sr/86Sr ratio indicate provenance from two different regions







